Rib Mountain, Inselberg formation in Marathon County, Wisconsin, United States
Rib Mountain is an inselberg formation in Marathon County near Wausau that rises distinctly above the surrounding landscape. The structure displays quartzite rock topped with syenite, which gives it its distinctive shape.
The formation developed roughly 1.5 billion years ago when quartzite intruded and was later covered by syenite. This ancient geological process created the distinctive ridge that rises above the surrounding terrain today.
The mountain holds a place in local folklore through its connection to Paul Bunyan, the legendary figure from American storytelling. This mythical link shapes how people in the region talk about and experience this landmark.
The summit houses broadcast equipment for multiple radio and television stations serving the region. Visitors should be aware that access to certain equipment areas may be restricted.
Granite Peak Ski Area on the slopes began operating in 1937 and ranks among North America's earliest ski destinations. This early establishment made the location a pioneer for winter recreation in the region.
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